ZD – it’s not a question of big deal or not. It’s a question of what we are supposed to believe, and that is a big deal.
The issues that you mention are actually less important because there are no halachic ramifications (to the best of my knowledge).
I didn’t read through all the previous posts, but it sounds like they are dealing with issues with halachic ramifications. But in any case, our beliefs are very important too. If we are not allowed to believe something, it is possible that it is kefira (at least on some level) to believe it.